The deal is a fascinating and promising example of impact investing, that uncharted space between philanthropy and profit maximization, and the U.S. needs much more of this, not to mention developing countries.

FORBES: Goldman Sachs' Foray Into Impact Investing

The last major space debris collision was in 2009 between Iridium 33, an operational U.S. communications satellite, and Cosmos 2251, a decommissioned Russian satellite, Kelso said.

CNN: STORY HIGHLIGHTS